Technical Reports

Survivability of Railroad Tank Car Top Fittings in Rollover Scenario Derailments - Phase 2

  • 01
  • Oct
  • 2009
AUTHOR: Robert Trent, Anand Prabhakaran, David Brabb, Vinaya Sharma
SUBJECT: Hazardous Materials
KEYWORDS: Dynamic Simulation, Fittings, Protection, Rollover, Tank Car, Tank Car Safety
ABSTRACT: Phase 2 of this project is a continuation from Phase 1 and investigates the survivability of railroad tank car top fittings in rollover scenarios using Failure Element Analysis techniques. It also explores additional protective concepts intended to survive more severe impacts than those of the Phase 1 study. Three new protective concepts, a rollbar assembly using an elliptical shape to allow the car to roll with little resistance, a fabricated deflective skid, and recessed fittings, are developed and analyzed in Scenario 1 (severe rollover as in the Phase 1 study). A third scenario is simulated for the new concepts, which includes longitudinal car velocity and impact into a concrete barrier. All three of the new protective concepts succeed at protecting the top fittings in both Scenario 1 and Scenario 3.
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